import { BigNumber } from "https://deno.land/x/web3@v0.11.1/types/bignumber.d.ts";
Returns a BigNumber whose value is the maximum of the arguments.
The return value is always exact and unrounded.
x = new BigNumber('3257869345.0378653')
BigNumber.max(4e9, x, '123456789.9') // '4000000000'
arr = [12, '13', new BigNumber(14)]
BigNumber.max.apply(null, arr) // '14'